King Oswald (slain at Maserfeld, 642) was shortly after succeeded by Oswy, an ardent disciple of the new faith, as was Alchfrith his son. Alchfrith acted as sub-king in Northumbria under his father.[3] He endowed a monastery at Ripon, which was presumably within his dominion, and placed there Eata, abbot of Melrose, with a little band of Scotic monks. At this time there was a young priest named Wilfrith, lately returned from a journey to Rome (658), with whom Alchfrith made fast friends. Convinced by Wilfrith that the practices of the Anglo-Scotic church, where they differed from those of Western Europe, were mistaken, he turned out the monks of Ripon, when they refused to alter their customs, and gave the establishment over to Wilfrith, to rule as abbot. The kings attempted to settle the differences of practice between the churches at the synod of Whitby (664), where the counsels of the Roman party under Wilfrith prevailed; and this caused the retirement of Colman, bishop of Northumbria, who refused to conform. It was now necessary to supply his place, and the kings, father and son, seem without disagreement to have selected each his own man, presumably for his own province; thus making two bishops instead of one.[4] While Alchfrith chose Wilfrith for his bishop, and sent him to Gaul for consecration, Oswy chose Chad, sending him to Kent to be consecrated as Bishop of York "for him and his" by the Archbishop. But by the time that Wilfrith had returned from his foreign journey, things were changed at the court. Alchfrith was dead, possibly slain in rebellion against his father; and Wilfrith, deprived of his patron, settled down quietly at Ripon as abbot, while Chad ruled the whole church of Northumbria from York. [3] Bishop Browne in _Theodore and Wilfrith_, pp. 20 and 36, inclines to the opinion that this sub-kingdom embraced the western rather than the southern portion of Northumbria, as generally supposed, in which case it would include those portions of Lancashire and the western coasts northwards, laid open by Ethelfrith's conquest at Chester. [4] See _Theodore and Wilfrith_. The same.